package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.utils.HttpUtils;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberResponseVo;
import com.atguigu.gulimall.auth.feign.MemberFeignService;
import com.atguigu.gulimall.auth.vo.SocialUser;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpResponse;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;

import static com.atguigu.common.constant.AuthServerConstant.LOGIN_USER;

/**
 * @author: kaiyi
 * @create: 2020-09-09 10:21
 */
@Slf4j
@Controller
public class OAuth2Controller {

  @Autowired
  MemberFeignService memberFeignService;

  @GetMapping(value = "/oauth2.0/weibo/success")
  public String weibo(@RequestParam("code") String code, HttpSession session) throws Exception {

    // 1、封装请求参数
    Map<String, String> map = new HashMap<>();
    map.put("client_id","2077705774");
    map.put("client_secret","40af02bd1c7e435ba6a6e9cd3bf799fd");
    map.put("grant_type","authorization_code");
    map.put("redirect_uri","http://auth.gulimall.com/oauth2.0/weibo/success");
    map.put("code",code);

    // 2、根据Code获取AccessToken
    HttpResponse response = HttpUtils
        .doPost("https://api.weibo.com", "/oauth2/access_token", "post", new HashMap<>(), map, new HashMap<>());

    // 3、处理
    if(response.getStatusLine().getStatusCode() == 200) {
      // 获取到了Token
      String json = EntityUtils.toString(response.getEntity());
      SocialUser socialUser = JSON.parseObject(json, SocialUser.class);

      //知道了哪个社交用户
      //1）、当前用户如果是第一次进网站，自动注册进来（为当前社交用户生成一个会员信息，以后这个社交账号就对应指定的会员）
      //登录或者注册这个社交用户
      System.out.println(socialUser.getAccess_token());

      //调用远程服务
      R oauthLogin = memberFeignService.oauthLogin(socialUser);

      if (oauthLogin.getCode() == 0) {
        MemberResponseVo data = oauthLogin.getData("data", new TypeReference<MemberResponseVo>() {});
        log.info("登录成功：用户信息：{}",data.toString());

        //1、第一次使用session，命令浏览器保存卡号，JSESSIONID这个cookie
        //以后浏览器访问哪个网站就会带上这个网站的cookie
        //TODO 1、默认发的令牌。当前域（解决子域session共享问题）
        //TODO 2、使用JSON的序列化方式来序列化对象到Redis中
        session.setAttribute(LOGIN_USER, data);

        //2、登录成功跳回首页
        return "redirect:http://gulimall.com";
      } else {

        return "redirect:http://auth.gulimall.com/login.html";
      }

    }else{

      return "redirect:http://auth.gulimall.com/login.html";
    }

  }



}
